When was this rule put in place? Didn't chokelahoma play against LSU in the NC game AFTER loosing to Kansas State in the Big 12 Championship game?

That's what the sport announcers were saying down here on the radio. I haven't seen or read the rule anywhere, but they were interviewing someone with the BCS and they brought it up. He also said they may go against that rule. Should be interesting......As a Gator fan, all I can do is pray for a miracle!